<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <script>
    function arra(method, url) {
      let xhr = new XMLHttpRequest()
      xhr.open(method, url)
      xhr.send()
      xhr.onreadystatechange = function () {
        if (xhr.readyState == 4 && xhr.status == 200) {
          console.log(xhr.responseText);
        }
      }

    }
    arra('get', 'https://ajax-base-api-t.itheima.net/api/getbooks')
  </script>
</body>

</html>